Water & Wastewater Treatment

28 Water & Wastewater Treatment February 2014 Contact the sales team on Tel: 0161 231 9140 info@hambakerpipelines.co.uk | www.hambakerpipelines.co.uk No More Pipe Dreams * Stop dreaming. Ham Baker Pipelines, one of the UK's leading suppliers of pipes and fittings, won't give you nightmares. What we will give you is: • Rapid enquiry response and excellent technical advice • A significant stock of a wide range of high quality products • A 'one-stop-shop' for all of your needs, even specials, fabricated in the UK • On-site delivery, on time and on budget Wake up to a different approach in the supply of pipelines and fittings. Contact us today. With Ham Baker Pipelines you've got it made – and delivered! {*n. An unrealistic hope or fantasy.} The Steel Water Pipe Experts Tel: 01543 416024 www.ftpipelinesystems.co.uk Number 1 UK supplier of coated and lined steel water pipes • Choice of coatings and linings • 80mm – 4000mm diameter • Choice of pipe length and jointing system • Field joint protection • Welded fittings and accessories • Full technical support A technical centre is available on the website. Who's who in the water industry 2014 is out now To order quote OP14: t: 01342 332007 e: whoswho@fav-house.com Multiple copy discount available Only £69 2014 A Water UK publication published by Faverham House Ltd Who's who in the water industry 2014 is an essential guide to the UK water industry and those who shape and infl uence the sector. Compiled by Water UK for the industry and its stakeholders and published by Faversham House, Who's who in the water industry 2014 is an invaluable source of information for the industry. The 41st edition includes: • Updated and expanded information on water companies and authorities, regulators, training and research groups, government departments and international contacts • Biographies of prominent individuals in the industry and a convenient directory of suppliers of products and services • An alphabetical Buyers' Guide section links with an A-Z name and address section listing suppliers to this key market PIPES AND NETWORKS 29 February 2014 Water & Wastewater Treatment wwtonline.co.uk L ocated on the outskirts of Streatley in Berkshire, Woods Farm water treatment works (WTW) has been an under-utilised asset for Thames Water, but that is about to change. Thanks to a £3.5M investment programme, the site will soon be quadrupling its abstraction levels from 2Ml/d to provide 9Ml/d for the wider Thames Water supply network via a 4km PE pipeline supplied by GPS. The new pipeline runs north from Woods Farm WTW to a pumping station, then on to Streatley Reservoir and from the reservoir to the Gatox main. The area is semi-rural, enabling a large part of the route to be steered through open countryside, allowing an open- cut installation. However, not all of the route was so straight forward, with several road crossings, a golf course, power cables, an area of woodland and a Bronze Age burial ground all creating obstacles that needed to be surmounted with no-dig installation techniques. Project manager, Roger Thatcher from Optimise, the joint venture (JV) between Clancy, Murphy, Barhale and MWH, created to deliver Thames Water's AMP5 schemes said, "Around 70% of the project could be delivered with an open-cut approach and these areas were tackled first before the scheme moved on to the more challenging business of directional drilling (DD) in areas where we either had to avoid obstacles or avoid disturbing the top soil for environmental or commercial reasons. Using flexible yet tough PE100 pipe across the whole project helped to simplify a very complex installation with a single delivery chain, custom-specified flange adaptors and just two sizes of pipe." GPS Excel PE100 pipe was specified in two sizes to address the demands of varying water pressure along different sections of the new pipeline, with thicker-walled 355mm pipe in SDR 11 specified for the high-pressure section of the pipeline that runs from the WTW, through the pumping station and from the reservoir. The latter half of the pipeline, where the water pressure decreases, was specified in A project to help Thames Water quadruple abstraction at a Berkshire treatment works created challenges for the installation of a major new pipeline. GPS PE Pipe Systems' regional sales manager, Nigel Gascoyne reveals what was involved No-dig helps deliver 4km Thames pipeline Innovations For all the no-dig areas of the installation, Optimise used a McElroy Polyhorse, a pipe-handling system made up of a series of adjustable racks that store the pipe when it is delivered to site and then feed the pipe onto a fusion machine as required. Being able to feed PE pipe lengths into a pipe handler and then butt-fuse them into continuous lengths cut the installation time, which reduced manpower expense and GPS says, provided a more efficient and safer site environment. While the directional drilling element of the project made it more complex than a straightforward open-cut installation, the techniques employed to install the pipe in the no-dig sections speeded up the programme considerably. To join the no-dig pipe sections with the open-cut areas, the GPS SlimFlanges were used. These are steel-reinforced flange adaptors which eliminate the usual need to upsize valves or metal fittings. According to GPS, these benefit installers with faster and more cost-effective jointing. The difficult nature of the ground created challenges for directional drilling GPS's PE pipe is butt-fused ready for installation u 31

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